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Health benefits
Recent studies have suggested that cocoa or dark chocolate may possess certain beneficial effects on human health. Dark chocolate, with its high cocoa content, is a rich source of the flavonoids epicatechin and gallic acid, which are thought to possess cardioprotective properties. Cocoa possesses a significant antioxidant action, protecting against LDL oxidation, perhaps more than other polyphenol antioxidant rich foods and beverages. Some studies have also observed a modest reduction in blood pressure and flow mediated dilation after consuming approximately 100g of dark chocolate daily. There has even been a fad diet named, "Chocolate diet", that emphasises eating chocolate and cocoa powder in capsules. However, consuming milk chocolate or white chocolate, or drinking milk with dark chocolate, appears to largely negate the health benefit. Chocolate is also a calorie-rich food with a high fat content, so daily intake of chocolate also requires reducing caloric intake of other foods.
Two-thirds of the fat in chocolate comes in the forms of a saturated fat called stearic acid and a monounsaturated fat called oleic acid. However, unlike other saturated fats, stearic acid does not raise levels of LDL cholesterol in the bloodstream. Consuming relatively large amounts of dark chocolate and cocoa does not seem to raise serum LDL cholesterol levels; some studies even find that it could lower them.
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Chocolate as an aphrodisiac
Romantic lore commonly identifies chocolate as an aphrodisiac. The reputed aphrodisiac qualities of chocolate are most often associated with the simple sensual pleasure of its consumption. More recently, suggestion has been made that serotonin and other chemicals found in chocolate, most notably phenethylamine, can act as mild sexual stimulants. While there is no firm proof that chocolate is indeed an aphrodisiac, giving a gift of chocolate to one's sweetheart is a familiar courtship ritual.
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